Title :
In situ design method for multichannel gain of a distributed Raman amplifier with multiwave OTDR
Author :
Kim, Pilhan ; Park, Jaehyoung ; Yoon, Hosung ; Park, Jonghan ; Park, Namkyoo
Author_Institution :
Opt. Commun. Syst. Lab., Seoul Nat. Univ., South Korea
Abstract :
We demonstrate a novel approach for the measurement of pump/signal waves interaction in the Raman amplifier (RA), with the use of multiwave optical time-domain reflectometry. With the application of obtained pump-evolution profiles to algorithms based on effective length recalibration, the multichannel Raman gain can easily be predicted with excellent accuracy for the undepleted, distributed RA. As a further extension of this algorithm, an in situ semi-analytic Raman-gain design method is also demonstrated.
Keywords :
Raman lasers; distributed amplifiers; laser variables measurement; optical fibre amplifiers; optical pumping; optical time-domain reflectometry; wavelength division multiplexing; Raman fiber; distributed Raman amplifier; effective length recalibration; in situ design method; multichannel gain; multiwave OTDR; multiwave optical time-domain reflectometry; pump-evolution profiles; pump/signal waves interaction; wavelength-division multiplexing; Design methodology; Distributed amplifiers; Optical amplifiers; Optical fiber polarization; Optical pumping; Optical scattering; Semiconductor optical amplifiers; Stimulated emission; Time domain analysis; Wavelength measurement;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.804661
